It is our standard procedure to use fat in the intestinal tube feeding in the early stage after laparotomy to maintain post-operative nutrition. Fat absorption of thesmall intestine, liver, lung and spleen was observed sequentially and compared with the changes of fat in the portal and peripheral veins. Emulsified soybean oil (1.5 g/kg) was administered through a jejunal fistula to adult dogs under general anesthesia. The small intestine, liver, lung and spleen were resected and determined by fat stains. Considerable difference was, noted in fat absorption between tube and parenteral feeding. Clinically when fat was administered by tube, observations were made of the fat content in the portal and peripheral veins and it was noted that the administered fat appears readily. in the blood and liver.
It can be concluded that our studies showed that fat given in the early stage after laparotomy is rapidly absorbed into the organs, chylus, portal and peripheral blood.

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Various anabolic steroids that are available (H. M. D. Ethylestrenol. 4CL-TA, 19-NAPP) were clinically and experimentally administered and their effects were evaluated on the basis of nitrogen balance, 17 KS, urinary out-put and changes in body weight.
Animals used in this experiments consisting of rats and mice were divided into.following three groups;(1) fasting (2) fed with protein free diet (3) fed with various amount of protein.
The third group was further subdivided according to the percentage of protein included in the diet.
The clinical evaluations were carried out mainly on the elderly patients who had relatively large operations such as gastrectomy and esophagectomy.
It was clearly identified that these steroids were most efficiently used when;(1) the patients is in the transitonal periods from catabolic to anabolic phase;(2) they are elderly;(3) they had bigger surgical stress.
Serial urinary outputs of 17-KS of elderly patients in their postoperativestates, were very similar to those of younger and healthy patients when the anabolic steroids were used properly.
Vigorous administration of those steroids were found to be very effective for the prevention of postoperative oliguria which is otherwise rather prevalent.

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